Optical instrument



` Fe, 33, X940. Q M JQNES 2,190,554

OPTICAL INSTRUMENT Filed Aug. 31, 1958 4 snags-sheet 1 INVEN TOR.

ATTORNEY M., m ma., c, M, mms 2,190,564

OPTICAL INSTRUMENT Filed Aug. 3l, .1958 4 Sheets-Sheety 2 INVENTOR.`

BY I,//7' I w f A TORNEY.

Febo 940. Q M, JQNES 2,190,564

OPTICAL INSTRUMENT Filed Aug. 31, 1938 4 sheets-sheet s :.F'IE- J0" I NVEN TOR.

LD/g 6,5 92 Y i12 (T Mcozzfag;

l BY

ATTORNEY C. M. JNS

OPTICAL INSTRUMENT Mi, @if

Filed Aug. 3l, 1938 4 Sheets-Sheet 4 Tl-E l INVENTOR. iM-67022@ BY JATTORNEY z optical instrument designed not only to strength-V PatentedFeb. 13, `1940` oFFlcE I oPTIoALnvsTRUMEN'r Charles Myron Jones, Yakima,Wash. Application August e1, `193s, seria1 No.227,s44 e I s claims. (o1.12s-fies) The object of my invention is to provide an en and develop themuscles of the eyes, but to stimulate freedom, motility andco-ordination of all the functions of the eyes, nerve impulses, etcetera, as actually used in the dailywork of the eyes.

AThe instrument may be used with stereoptic pictures or with any movingor stationary target desired. While the eyes are held at a xed focus vonthe target used, the convergence vand divergence of the eyes is slowlyshifted between predetermined limits at which the stops are set. In thisway the habits of association ofthe two nerve impulses and theco-ordination or lack of it can be corrected according to the needfound.

In the drawings: Figure 1 is a top plan view of an embodying myinvention. l

, Figure 2 is a side elevation of Figure 1. Figure 3 is a detail frontelevation of thelens box on an enlarged scale.

Figure 4 is a top plan View of Figure 3; A A Figure 5 is a horizontalsection on the line 5--5 of Figure 3.

Figure 6 is a rear elevation of the instrument, partly in section.

Figure 7 is a view similar to Figure 5 showing the lenses out ofalignment.

Figure 8 is a transverse vertical section on the line 8 8 of Figure 5.

Figure 9 is a view similar to Figure 8 on the line 9-9 of Figure '7.

Figure 10 is a, detail sectional view on the line lu-III of Figure 5.

Figures 11a, 11b and 11c are schematic illustrations of the normal andextreme positions of the lenses assumed during the operation of thedevice. Y

Figure 12 is a longitudinal sectional view of the lens holder with lensfor stereoscope work.

The reference numeral I designates a base in which is a suitableelectric motor connected to `the cord 2 which may be connected to anelectrical outlet. A standard 3 is secured to the base and is providedwith a telescoping section 4 held in adjusted position by the wing nut 4whereby the height of the instrument may be adjusted to suit thepatient.` I

A housing 5 is connected to the upper end of thesection 4 and extends atright angles thereto. At the free end `of the housing a lens box 6 issecured, which box is providedwith the hood instrument 7, the top frontedge of which is concaved toi` conform to the head of the patient.

'as may be required.

l A shaft 8 secured to 'the motor and extends upwardly through thestandard 3-4 to the upper endof which is keyed a motion transmittingvarm 9 (see Fig. 10) extending beyond one side of the shaft and having apin I9 at its free end to which one end of aflink II is pivotallyvconnected. 'A second motion transmitting arm I2 is connected at one endto the pin I0 (see Figure 10), said second arm extending at its free endbeyond the diametrically opposite side of` the shaft and having a pin I3to which ispivoted ione end of alink I4.

`The front wall I5 of the lens box is provided with concave lenses I6,`I'I, rigidly secured in proper` position and appropriately spaced.

A rod I8 is secured within and at the top of the lens box 6. Lensholders 2li-2| are provided with channel or groovel like elements 22,

22 at the top and bottom thereof. The rod I8 in the element 22 actsmerely as a guide for the top of the lens frames.` Convex lens 23, 24,are mounted in these lens holders 20-2 I The lens holder 20 isfrictionally mounted at its bottom on lthe rod 2l and is moved therebysolely by friction. A rod 2l frictionally telescoped within the rod 25is connected to the link I I `which in turn is connected to the arm I2.The lens holder 2| is frictionally mountedon the rod 21 through whichthe rod 25 also telescopes with a frictional engagement, said rod 21being connected as indicated at 28 by link I4 to the arm 9. Thus thelens holders are adapted to be reciprocated simultaneously andalternately toward and from each other and each rst in one I projection46; the lower wall having an `elongated slotv41 through which a setscrew 48 passes,

while the top wall of the lens box 6 is provided with an elongated slot-49 through which `the top portion of the rods 31 pass, whereby the lens`frame 4I may be adjusted toward and from the front wall'4 of the lensbox to space the convex lenses 24 toward orlfrom the concave lenses I6 Arod 39 extends rearwardly. from the lens box and is provided at its rearend with a holder 40 upon which the object 4I to be observed is securedby suitable clamps 42. `This card holder 4I) may be slid along the rod39 and is usedfor stereoscopic cards only.

The strength of the lenses is approximately th l same, and by slidinglthe lenses so that the optical centers are not in line with each other,a prismatic eiect is secured according to the distance moved. Asexplained, the concave lens is mounted rigidly while the convex lens isslidably mounted. Starting with the transmission of motion throughmotor, shaft, links and rods, a reciprocating motion to the lenses firstaway from each other and then towards each other is transmitted to theslidable lens holders. The sidewise movement of the slidable lensholders is controlled by the stops 5.9, 3|, 30, 32, stops 29 and 32which limit the outward sidew'ise movef ment of these lens holdersrelative to each other and stops 30 and 3l limit the inward' movement ofthe lens holders relative to eachother and overcome the rictionalengagement between the holders and the rods 23 and 2l. while the rods 25and 2l always have fixed ranges of motion in the rotation of arms 9 andl2 the movements of the lens holders may be controlled, because of theirsliding engagement with .the rods, by means of the aforesaidstops. Thesestops are adjustable to regulate the extent of motion of the lensholders by the indicator levers 33, 34, 35, 36, which are connected byrods y lens holders 2t .are provided With'grooves l2m into which lens2lb may be positioned.

What I clairn is:

l. In an optical instrumentfof the character described, two pairs oflenses, the' lenses of one pair being arranged in rear of'the lenses ofthe in other words,`

other pair, and the lenses of the rear pair being mounted forreciprocating motion in paths crossing the optical paths of the lensesof the other or front pair, a rotary shaft, arms extending from therotary shaft in opposite directions, and connections between said armsand the respective lenses of the rear pair for reciprocating said lensesin said paths toward and from each other.

2. In an optical instrument of the character described, a pair of frontlenses, a pair of rear lenses each movable back and forth across theoptical path of'oneof the front lenses, a pair of fixed stroke drivingelements each having a frictional driving engagement with one of therear lenses and on which the lens is slidably movable, means forreciprocating said driving elements to communicate corresponding motionto the rear lenses toward and from one another, and adjustable stops forlimiting the range of movement of each rear lens to a desired .degreeless than the full range of movement of its driving element. f

3. In an optical instrument of the character described, a pair of frontlenses, a pair of rear lenses each movable back and forth across theoptical path of one of the front lenses, a pair of fixed stroke drivingelements each having a frictional driving engagement with one of therear lenses and on which the lens Vis slidably movable, a rotary shaft,arms projecting in diametrically opposite directions from the shaft andconnected to the driving elements for moving the same in opposite.directions simultaneously, and adjustable stops for limiting the rangeof movement of each rear lens to a desired degree less than the fullrange of movement of its driving element.

CHARLES MYRON JONES.

